To provide a dash silencer for automobile which devises a fiber diameter and permeability of a formation material of a skin layer laminated on a base material layer, and improves soundproof performance such as sound absorption performance and sound insulation performance.SOLUTION: A dash silencer DS includes: a base material layer 40 provided along a dash panel which partitions an engine room and a cabin of an automobile; and a skin layer 50 laminated on the base material layer 40 so as to face the dash panel through the base material layer. The base material layer 40 is formed of a felt having heat-fusion fiber with a blending ratio in a range of 20(%) to 40(%), and the skin layer 50 is formed so as to have permeability in a range of 10(cm/cms) to 40(cm/cms) with a polyester fiber formed of an average fiber diameter in a range of 1.0(μm) to 3.0(μm).SELECTED DRAWING: Figure 3

    【課題】本発明は、基材層に積層される表皮層の形成材料の繊維径や通気度に工夫を凝らして、吸音性能や遮音性能等の防音性能を向上させるようにした自動車用ダッシュサイレンサーを提供する。【解決手段】ダッシュサイレンサーDSは、自動車のエンジンルームと車室とを区画するダッシュパネルに沿い設けられる基材層40と、当該基材層を介しダッシュパネルに対向するように基材層40に積層される表皮層50とを備える。基材層40は、20(%)〜40(%)の範囲内の配合率にて熱融着繊維を有するフェルト層でもって形成されており、表皮層50は、1.0(μm)〜3.0(μm)の範囲内の平均繊維径からなるポリエステル系繊維でもって10(cm3/cm2・s)〜40(cm3/cm2・s)の範囲以内の通気度を有するように形成されている。【選択図】図3


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    Title :

    DASH SILENCER FOR AUTOMOBILE


    Additional title:

    自動車用ダッシュサイレンサー


    Contributors:
    ASAI TAKAHIRO (author) / UEDA KOSUKE (author)

    Publication date :

    2018-12-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / D04H Herstellen von flächigem Textilgut, z.B. aus Fasern oder fadenförmigem Material , MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL




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